Mk2 16V Turbo - Original Stealth Racing car

[Sam]

Thats the point of the amaizment. It the actual turbo that I took off, serviced and it came back looking like that!! 

[Khare]

Oh my!

I thought it was a new turbo!

[Sam]

Right, small update... had an immense oil leek, I was loosing 1 litre every 25 miles and could only put it down to the oil return pipe comming from the turbo so replaced its crazy setup with a straight through mega expensive hydraulic high temp hose:



So hopefully any further oil is from all the sh!te that was originally sprayed on the back of the block. Left her running for about 5 min on the spot and left ALOT less oil that she would previously when just sat on the spot for say 20 seconds.

Also drained my oil breather pipe container thingy. Still got weird smoke comming out of it but not too concerned to be honest. Here is what came out



I have also broken the electronic boost control solenoid which is not great as she just boosts straight though to 15 psi on either setting so will be getting a new one hopfully next week. The tappets also sound as if they are about to fall out/in so need to seriously read up on replacing them and get on it. If anyone has a guide on how to change 16v tappets it would be much apreachiated 

[lemski]

Mr marriot well done. I'm going to make you a medal for the next meet

[tshirt2k]

Good thread here. Have you thought about standalone? You can get much more out of it with fuelling correct at all rpms plus ignition improvements will probably give you more power too.

Someone on CGTi converted his TurboTechnics golf 16v to megasquirt and had very good results. You can junk the outdated k star and properly tune the engine to its full potential. I myself use MS to good effect. Can't recommend it enough.

[Sam]

Good thread here. Have you thought about standalone? You can get much more out of it with fuelling correct at all rpms plus ignition improvements will probably give you more power too.

Someone on CGTi converted his TurboTechnics golf 16v to megasquirt and had very good results. You can junk the outdated k star and properly tune the engine to its full potential. I myself use MS to good effect. Can't recommend it enough.

I wouldn't mind doing it but, this is the original turbo-teknics/stealth racing demo car. So converting it would be sacrilegious really. But if I ever had major problems with the k-jet i think I would switch.

[tshirt2k]

Ok. But original is not always best and k star is very crude.  And you mention lean at top end. How lean? Do you have a wideband?  Could find engine failure happens before k jet problems are realised.  Seen that happen too. 

[Sam]

Ok. But original is not always best and k star is very crude.  And you mention lean at top end. How lean? Do you have a wideband?  Could find engine failure happens before k jet problems are realised.  Seen that happen too. 

Ok but where the hell would I even start switching to megasquirt? I have looked into it but it seems like something you either have to study up on for ages or just give in

[tshirt2k]

There's plenty of info on cgti. You do have to study a bit but there are lots of people who have used it on the vw engine.

Look at the stickys on this page and start asking questions. Will probably clean up you engine bay a bit too. It can be a bit daunting but there are people who can help 

[Sam]

Lets fill y'all in with my progress as of late

Right, ran a compression test and cylinders 1 and 4 are very low (plugs had oil on them too). She is chucking oil out the zaust, back of block and exhaust fumes out of my oil catch tank. Stripping her down slowly and methodically, labeling EVERYTHING and so far we are ok and Im down to the block head.. now i am confused...
I have come to the conclusion that i have not got a ****ing clue whats wrong!? Here are some pics to possibly help my explanation to what I found.

Big thanks to my mate jim too for letting me use his supersize garage!

Before:


After:


The valves all look fine?


No detination to any piston, I also put the crank pully through one cycle and felt all the bores, nothing of any merit to be found there. You can see that the oil has been going down the back of the block most notably through 1 and 4. Also a couple of the head bolts were fully submerged in oil when I removed them whilst others were bone dry, is this normal?
The only other thing I noticed is that on the bore wall at the top of the stroke of 1 and 4 its a little more rough than on 2 and 3.